In this step, you will learn about the strongest encryption scheme, the one-time pad (or OTP), as implemented by the Vernam cipher. You will also find out how its ‘perfect …
Symmetric vs asymmetric Each of the ciphers that you have seen so far — Caesar, Vigenère, and Vernam — have been symmetric encryption schemes. Symmetric encryption In a symmetric encryption …
You might remember the Vigenère cipher from the earlier step about the history of encryption. It is a polyalphabetic cipher that uses multiple shifts to encrypt a message. In this …
A key application of encryption is network security. Networks that handle data are reliant on encryption to protect sensitive information from those who are not authorised to access it. When …
Let’s start with a simple definition. What is encryption? Encryption is a process that transforms data to obscure its meaning — in other words, it turns it into something that …
In this article, we are going to explore how encryption schemes are evaluated to measure their security. You will find out how you can prove that modern encryption schemes are …
In this step you will learn about several of the main concepts in the encryption process, as well as some important terms. As you have already seen, an encryption scheme …